Flow regulator



April 26, 1938 4 H. G. TREMMEL 2,115,675

FLOW REGULATOR Filed Oct. 8, 1937 ATTORNEY.

Patented Apr. 26, 1938 UNITED STATES vPATENT OFFICE The North AmericanFibre Products Company,

Cleveland, Chio,` a corporation of Ohio Application October 8,

1 Claim.

plished by a closely regulated adjustment of the size of the orificethrough which' the fluid must pass. While the invention has a Wide rangeof application, being adaptable to all sorts of fluids passing under theinfluence of gravity or pressure, it has been worked out with particularreference to use in a system for feeding a rust and scale preventing uidinto a Water line, the Water pressure being balanced with respect to thecontainer for the compound so that the rust and scale preventing liquidovvs under the influence of relatively small force. It is to beunderstood that the valve is not limited to this use b-ut is adapted forvarious uses.

Accordingly, the principal object of the invention is to provide ameasuring valve of the type indicated above Which shall be extremelysimple and suitable for operation and maintenance by relativelyunskilled persons. More specifically, an object is to provide a valve ofthis character having novel means for cleaning the orice in the event ofthe same becoming clogged or partially clogged.

Limited objects leading to the attainment of the above indicated objectsare the provision of a valve body having an` extremely close littingrotor Working therein; the provision of separate metals for the valvebody and rotor, the former preferably being of brass and the latter ofhardened stainless steel; the provision of novel packing means for thejoint between the rotor and the valve body; the provision of a simpleand elective construction for the removal of the rotor in casereplacement should become necessary and novel means for attachment of anindicating pointer to such rotor without in any way rendering thedisassembling of the device more dillicult.

Other and more limited objects will be in part apparent and in partpointed out in connection with the accompanying drawing wherein Fig. lis a sectional View taken centrally through a device embodying myinvention; Fig. 2 is a top plan view thereof; Fig. 3 is an end elevationlookingI from leit to right in Fig. 1; and Fig. 4 is a section on theline 4 4 oi Fig. 1.

In 'the drawing the numeral I indicates generally a valve bodypreferably composed of brass and being provided With pipe receivingbosses 2 and 3 for receiving inlet and outlet pipes 2a and 3arespectively and bosses 4 and 5 internally drilled to receive the valverotor 6 and externally 1937, Serial `No. 167,949

threaded to receive packing nuts 'I and 8. It will be noted that theends of the bosses 4 and 5 are concave as indicated at 9 and III Whilethe inner faces of the packing nuts 'I and 8 are similarly concavev asindicated at II and I2. This lenables packing material I3 receivedbetween said concave faces to be urged into sealing relation to therotor 6 by a relatively small tightening of the said nuts. The rotor 6is provided with a shouldered portion or head I4 which is adapted toengage the outer face of the packingl nut 'I to limit motion of therotor 6 axially toward the left as seen in Fig. 1. Extendingdiametrically through the rotor 6 at the left hand end is a pointer I5which is held in position with respect to said rotor and a scale I6 bymeans oi a set screw II received in the left hand end of the rotor 6.

Extending diametrically through the rotor 6 is a passage for uid made upof a relatively large bore I8 and drilled almost through the said rotor,and a small Wedge-shaped opening I9 extending the remainder of the Waythrough such passage. The bore I8 terminates in a curved bottom wall ofa curvature approximating that of the outer surface of the rotor 6 so asto leave a very thin Wall in Which the Wedge shaped opening I9 isformed. It will be noted that the passage made up of the openings I8 andI9 registers with passages 20 and 2| in the valve body I so that thepassage is large With the exception of the Wedgeshaped opening I9.

In the operation of the device, fluid passes from the inlet pipe 2athrough the opening 20 in the valve body and then through theWedge-shaped opening in the thin Wall at the end of the bore I8 whichforms the restricting influence and then freely through the bore I 8 andthe opening 2i to the pipe 3a. Inasmuch as the rotor 6 has a very closeWorking fit With the valve body at the opening 20, it Will be clear thatin the event of foreign material clogging the opening I9, a rotation ofthe pointer I5 in a direction to move the Wide end of the Wedge-shapedopening I9 in advance of the pointed end thereof may be made use of forthe purpose of shearing 01T any projecting portion of such foreignmaterial. Since the portion thus sheared off is the portion of theforeign material which did not pass through the opening and preventedthe passage of the entire particle therethrough, the portion left in theopening I9 will be rather smaller than such opening itself. The resultis that upon further rotation in the same direction the bore I8 will bebrought into register with the passage 20, resulting in dislodging theparticle of foreign material from the opening I9 by reversal of thepositions of the bore and opening with respect to the passages 20 and2|. It thus appears that by simply rotating the pointer I from theposition at which it has been set one or more complete turns, thecleaning can be accomplished. The operator, even though he be notsuciently trained to understand the reason therefor may be instructed torotate the element I5 one complete turn at stated periods. This willresult in keeping the device free from clogging and is a very simplemethod of keeping the passage open through a measuring valve. A cleanoutopening 23 is provided in a boss 22 extending from the valve body I andis normally closed by the plug 24. When a quantity of foreign materialhas accumulated in the passage portion 2D sufcient to interfere withnormal operation of the device, fluid may be passed through from thepassage portion 2 I, through the passage portion 20 and out through theopening 23, this being a reversal of normal direction of fluid flow.

From the foregoing it will be clear that I have provided a device whichis Well adapted for its intended purposes and while I have shown anddescribed the preferred present embodiment of my invention I Wish itunderstood that I am not limited to the details of the disclosure butonly in accordance With the appended claim.

Having thus described my invention, what I claim is:

A Valve for allowing passage of a predetermined quantity of uid, thesame comprising, in combination, a valve body having an inlet passageand an outlet passage, a closely tting rotor working therein and havinga passage therethrough adapted to register with the said inlet andoutlet passages, the rotor passage being made up of a relatively largebore extending diametrically from one side of said rotor nearly to theopposite surface, leaving a thin wall, and a Wedge shaped opening formedin said thin Wall and having its greatest dimension extendingcircumferentially oi said rotor, said bore being formed with a curvedbottom of a curvature approximating that of the surface of said rotor,and means for rotating said rotor, thereby to bring the passage and .theopening thereof into register with either of the passages in the valvebody.

HENRY G. TREMMEL.

